[2725] | 1 | /*
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| 2 | * sestatus -- displays the status of SELinux
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| 3 | *
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| 4 | * Ported to busybox: KaiGai Kohei <kaigai@ak.jp.nec.com>
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| 5 | *
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| 6 | * Copyright (C) KaiGai Kohei <kaigai@ak.jp.nec.com>
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| 7 | *
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| 8 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 9 | */
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| 10 |
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[3232] | 11 | //usage:#define sestatus_trivial_usage
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| 12 | //usage: "[-vb]"
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| 13 | //usage:#define sestatus_full_usage "\n\n"
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| 14 | //usage: " -v Verbose"
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| 15 | //usage: "\n -b Display current state of booleans"
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| 16 |
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[2725] | 17 | #include "libbb.h"
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| 18 |
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| 19 | extern char *selinux_mnt;
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| 20 |
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| 21 | #define OPT_VERBOSE (1 << 0)
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| 22 | #define OPT_BOOLEAN (1 << 1)
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| 23 |
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| 24 | #define COL_FMT "%-31s "
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| 25 |
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| 26 | static void display_boolean(void)
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| 27 | {
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| 28 | char **bools;
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| 29 | int i, active, pending, nbool;
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| 30 |
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| 31 | if (security_get_boolean_names(&bools, &nbool) < 0)
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| 32 | return;
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| 33 |
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| 34 | puts("\nPolicy booleans:");
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| 35 |
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| 36 | for (i = 0; i < nbool; i++) {
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| 37 | active = security_get_boolean_active(bools[i]);
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| 38 | if (active < 0)
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| 39 | goto skip;
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| 40 | pending = security_get_boolean_pending(bools[i]);
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| 41 | if (pending < 0)
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| 42 | goto skip;
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| 43 | printf(COL_FMT "%s",
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[3232] | 44 | bools[i], active == 0 ? "off" : "on");
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[2725] | 45 | if (active != pending)
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| 46 | printf(" (%sactivate pending)", pending == 0 ? "in" : "");
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| 47 | bb_putchar('\n');
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| 48 | skip:
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| 49 | if (ENABLE_FEATURE_CLEAN_UP)
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| 50 | free(bools[i]);
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| 51 | }
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| 52 | if (ENABLE_FEATURE_CLEAN_UP)
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| 53 | free(bools);
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| 54 | }
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| 55 |
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| 56 | static void read_config(char **pc, int npc, char **fc, int nfc)
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| 57 | {
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| 58 | char *buf;
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| 59 | parser_t *parser;
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| 60 | int pc_ofs = 0, fc_ofs = 0, section = -1;
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| 61 |
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| 62 | pc[0] = fc[0] = NULL;
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| 63 |
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| 64 | parser = config_open("/etc/sestatus.conf");
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| 65 | while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
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| 66 | if (strcmp(buf, "[process]") == 0) {
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| 67 | section = 1;
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| 68 | } else if (strcmp(buf, "[files]") == 0) {
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| 69 | section = 2;
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| 70 | } else {
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| 71 | if (section == 1 && pc_ofs < npc -1) {
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| 72 | pc[pc_ofs++] = xstrdup(buf);
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| 73 | pc[pc_ofs] = NULL;
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| 74 | } else if (section == 2 && fc_ofs < nfc - 1) {
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| 75 | fc[fc_ofs++] = xstrdup(buf);
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| 76 | fc[fc_ofs] = NULL;
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| 77 | }
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| 78 | }
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| 79 | }
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| 80 | config_close(parser);
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| 81 | }
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| 82 |
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| 83 | static void display_verbose(void)
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| 84 | {
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| 85 | security_context_t con, _con;
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| 86 | char *fc[50], *pc[50], *cterm;
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| 87 | pid_t *pidList;
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| 88 | int i;
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| 89 |
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| 90 | read_config(pc, ARRAY_SIZE(pc), fc, ARRAY_SIZE(fc));
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| 91 |
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| 92 | /* process contexts */
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| 93 | puts("\nProcess contexts:");
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| 94 |
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| 95 | /* current context */
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| 96 | if (getcon(&con) == 0) {
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| 97 | printf(COL_FMT "%s\n", "Current context:", con);
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| 98 | if (ENABLE_FEATURE_CLEAN_UP)
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| 99 | freecon(con);
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| 100 | }
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| 101 | /* /sbin/init context */
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| 102 | if (getpidcon(1, &con) == 0) {
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| 103 | printf(COL_FMT "%s\n", "Init context:", con);
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| 104 | if (ENABLE_FEATURE_CLEAN_UP)
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| 105 | freecon(con);
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| 106 | }
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| 107 |
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| 108 | /* [process] context */
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| 109 | for (i = 0; pc[i] != NULL; i++) {
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| 110 | pidList = find_pid_by_name(bb_basename(pc[i]));
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| 111 | if (pidList[0] > 0 && getpidcon(pidList[0], &con) == 0) {
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| 112 | printf(COL_FMT "%s\n", pc[i], con);
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| 113 | if (ENABLE_FEATURE_CLEAN_UP)
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| 114 | freecon(con);
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| 115 | }
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| 116 | if (ENABLE_FEATURE_CLEAN_UP)
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| 117 | free(pidList);
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| 118 | }
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| 119 |
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| 120 | /* files contexts */
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| 121 | puts("\nFile contexts:");
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| 122 |
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| 123 | cterm = xmalloc_ttyname(0);
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| 124 | //FIXME: if cterm == NULL, we segfault!??
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| 125 | puts(cterm);
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| 126 | if (cterm && lgetfilecon(cterm, &con) >= 0) {
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| 127 | printf(COL_FMT "%s\n", "Controlling term:", con);
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| 128 | if (ENABLE_FEATURE_CLEAN_UP)
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| 129 | freecon(con);
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| 130 | }
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| 131 |
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| 132 | for (i = 0; fc[i] != NULL; i++) {
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| 133 | struct stat stbuf;
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| 134 |
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| 135 | if (lgetfilecon(fc[i], &con) < 0)
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| 136 | continue;
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| 137 | if (lstat(fc[i], &stbuf) == 0) {
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| 138 | if (S_ISLNK(stbuf.st_mode)) {
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| 139 | if (getfilecon(fc[i], &_con) >= 0) {
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| 140 | printf(COL_FMT "%s -> %s\n", fc[i], _con, con);
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| 141 | if (ENABLE_FEATURE_CLEAN_UP)
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| 142 | freecon(_con);
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| 143 | }
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| 144 | } else {
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| 145 | printf(COL_FMT "%s\n", fc[i], con);
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| 146 | }
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| 147 | }
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| 148 | if (ENABLE_FEATURE_CLEAN_UP)
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| 149 | freecon(con);
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| 150 | }
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| 151 | }
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| 152 |
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| 153 | int sestatus_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 154 | int sestatus_main(int argc UNUSED_PARAM, char **argv)
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| 155 | {
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| 156 | unsigned opts;
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| 157 | const char *pol_path;
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| 158 | int rc;
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| 159 |
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| 160 | opt_complementary = "?0"; /* no arguments are required. */
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| 161 | opts = getopt32(argv, "vb");
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| 162 |
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| 163 | /* SELinux status: line */
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| 164 | rc = is_selinux_enabled();
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| 165 | if (rc < 0)
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| 166 | goto error;
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| 167 | printf(COL_FMT "%s\n", "SELinux status:",
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| 168 | rc == 1 ? "enabled" : "disabled");
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| 169 |
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| 170 | /* SELinuxfs mount: line */
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| 171 | if (!selinux_mnt)
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| 172 | goto error;
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| 173 | printf(COL_FMT "%s\n", "SELinuxfs mount:",
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| 174 | selinux_mnt);
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| 175 |
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| 176 | /* Current mode: line */
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| 177 | rc = security_getenforce();
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| 178 | if (rc < 0)
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| 179 | goto error;
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| 180 | printf(COL_FMT "%s\n", "Current mode:",
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| 181 | rc == 0 ? "permissive" : "enforcing");
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| 182 |
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| 183 | /* Mode from config file: line */
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| 184 | if (selinux_getenforcemode(&rc) != 0)
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| 185 | goto error;
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| 186 | printf(COL_FMT "%s\n", "Mode from config file:",
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| 187 | rc < 0 ? "disabled" : (rc == 0 ? "permissive" : "enforcing"));
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| 188 |
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| 189 | /* Policy version: line */
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| 190 | rc = security_policyvers();
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| 191 | if (rc < 0)
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| 192 | goto error;
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| 193 | printf(COL_FMT "%u\n", "Policy version:", rc);
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| 194 |
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| 195 | /* Policy from config file: line */
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| 196 | pol_path = selinux_policy_root();
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| 197 | if (!pol_path)
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| 198 | goto error;
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| 199 | printf(COL_FMT "%s\n", "Policy from config file:",
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| 200 | bb_basename(pol_path));
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| 201 |
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| 202 | if (opts & OPT_BOOLEAN)
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| 203 | display_boolean();
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| 204 | if (opts & OPT_VERBOSE)
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| 205 | display_verbose();
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| 206 |
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| 207 | return 0;
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| 208 |
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| 209 | error:
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| 210 | bb_perror_msg_and_die("libselinux returns unknown state");
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| 211 | }
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